Shipping drum



Y.Imm 12, 1928. i 1673,256

H. E. MCCRERY ET Al.

SHIPPING DRUM Original Filed Nov. 20. 1922 gwn/tov 11m/145. Mccmy. Albe' El Jeael:

Patented J me I 12, 1928.

- UNITED STATES ,PATENT oF-Flcs.

HAROLD E. MQCRERY AND ALBERT E. JEssER, or APoLLo, PENNSYLVANIA, AssIGNoBs To PITTSBURGH STEEL DRUM COMPANY, or PITTSBURGH, PENNSYLVANIA, A coR POBATION OF DELAWARE.

SHIPPING DRUM.

Url'glnal application led November 20,- 1922, Serial No. 602,095. lividedV and this application med September '26, 1925.

This invention relates to shipping drums and is adivision of our copendingI application Serial No. 602,095, iled ovember 20th, 1922, which has matured into Patent No. 1,565,809, dated December 15, 1925.

In our copending application we describe andvclaim. a shipping drum and method of making the same, wherein we provide a suban inturned lian e slightly spaced from and parallel to the ody of the drum, ahead being adapted for arrangement in each end of the drum and provided with a c lindrical ange ,turned outwardly toward t eend of the drum and adapted to be arranged inthe space between the body of the ldrum and the adjacent inturned ange. A shoulder is rolled inwardly from the body portion to contact with the inner face of each head to properly maintain it in position. In the formation of the drum an interlocking joint is formed at the edges of the metal from which the drum is rolled whereby the edges may-be securedto ether to form a -substantially cylindricalody. It has been found advisable to provide the body of the drum with reinforcing' beads rolled outwardly therefrom intermediate the heads and.when forming the beads it has been found that the edges of the drum are distorted or curved,- thus preventing the interlocking joints from being properly .brought together. In our copending application above identified, we have also illustrated a drum formed in the manner-described and provided adjacent the interlocking joint with reinforcing beads formed integral with the drum and arranged arallel to the interlocking joint. `It has een found that when these parallel beads are formed it prevents distortion of the edges of the drum so that the complementary portions of thei interlocking jointv remain straight, thus facilitating the assembling of the parts.

The present application is directed to the provision of the reinforcing beads referred to and has for its principal object the provision of rolled beads almost entirely sur- 50 rounding the drum intermediate the heads thereof-and longitudinal beads arranged ar,- lallel to theiedges ofthe metal from w 'ch serial No. 58,755.

' In the drawings we have shown'one form Y of the invention. In this showing,

stantially cylindrical drum body formed of 10 sheet metal and provided at each end with Figure 1 is a side elevation of a drum embodying' the invention,

Figure 2 1s la fragmentary sectional perspetlve showing the drum assembled,

- Figure 3 1s a similar view showing'thej parts disassembled, and,

Fllgure 4 is a sectioni qn line 4-4 of Figure l ranged in each end of the drum' and isi provided vwith a peripheral cylindrical` ange 14 adapted to be arranged in the space be tween the body portion and the adjacent liange 12. After the heads are arranged in position, a shoulder 15 may be rolled in-Y t Referring to .the drawings, the numeral I wardly from .the body of the drum against the inner face of each of the heads to maintain it in position. Each of the flanges 12 maybe provided with cut outsv 16 to permit contraction of'th'e metal when vthe flanges 12 are formed. These cut outs are arranged in alinement with, each other. and spaced from the edges of the fiange and after the elements `have been assembled, a substantially. semi-circular bead 17 may be rolled from the ianges 12 and 14 and the adjacent body portionv of thedrum. The beads 17 are adapted to form hoops upon which the I barrel may be rolled.

In he formation of the' drum,jsubstan tially circumferential beads 18 are rolled from the metal of the drum as shown in Fig ures 1, 2 and .3. These beads extend to points slightly spaced from vthe interlocking edges of the drum, as shown in Figure 1 and serve as reinforcements to minimize the danger of the drum becoming bent when in use. The body portion of the drum is further provided with longitudinal beads 19 connecting the ends of the beads 18 and the beads 19 are arranged parallel to the interlocking joint at the edges of the drum and extend substantially the entire distance between the shoulders 15.

The operation of the device is as follows:

In theformation of the drum, the beads 18 and 19 are rolled or stamped, preferably the latter, while the sheet is flat and the interlocking joint is formed at the edges of the sheet, as will be apparent. Obviously it is necessary that the elements of theinterlocking joint be maintained straight in order that the interlocking joint may be brought into proper engagement, as shown in Figure 4. .It has been found that where neither of the beads 18 and 19 is provided in the body of the barrel, it vis sometimes di'icult to bring the elements of the interlocking joint together in proper straight alinement v due to the flexibility of the metal. When the reinforcing beads 18 are provided, these elements create a distinct tendency of the elements of the interlocking joint to form a curve, thus making it doubly impossible to properly secure the interlocking joint. It will be obvious that the joint must be substantially'prefect in order to present a inished` drum which is adapted to contfnin a liquid since any imperfections in the interlocking joint will cause leakage. We have found that the provision of the longitudinal l beads 19 corrects-all tendency of the edges of the body to curve or become distorted whereby the elements of the interlocking joint remain straight and may be brought into perfect engagement. After the body of the barrel has been thus assembled the interlocking joint is rolled against opposite sides to provide a leak-proof joint.

It is tobe understood that the form of .our invention herewith shown and described is to be taken as a preferred example of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the s irit of the invention orthe scope of the subjoined v metal body curved in the form of a cylinder and having its contiguous edges bent back upon themselves to provide an interlocking joint, said body being provided with a,

reinforcing bead extending throughout vthe greater portion of its circumference substantially at right angles to said interlocking joint and having its ends terminating a short v distance from said joint, said body portion being further provided with reinforcing beads arranged substantially parallel to said joint on opposite sides thereof, said last named beads extending substantially .throughout the length of sald interlocking joint and intersecting the ends of said first named bead.

In testimony whereof we affix our signatures.

vHAROLD E. MCCRERY.

ALBERT E. JESSER. 

